Lam Research Corp. engages in the design, manufacture, marketing, refurbishment, and provision of semiconductor processing equipment used in the fabrication of integrated circuits. It operates through the following geographical segments: United States, China, Europe, Japan, Korea, Southeast Asia and Taiwan. The company was founded by David K. Lam in 1980 and is headquartered in Fremont, CA. |  |
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| Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
| ARCHER TIMOTHY | President and CEO | Dec 17 '25 | Option Exercise | 17.68 | 113,300 | 2,002,578 | 1,045,709 | Dec 18 12:55 PM | | ARCHER TIMOTHY | President and CEO | Dec 17 '25 | Sale | 163.86 | 163,300 | 26,758,338 | 932,409 | Dec 18 12:55 PM | | ARCHER TIMOTHY | Officer | Dec 17 '25 | Proposed Sale | 163.86 | 163,300 | 26,758,338 | | Dec 17 09:46 AM | | Bettinger Douglas R | Chief Financial Officer & EVP | Nov 14 '25 | Sale | 150.60 | 40,080 | 6,036,048 | 987,237 | Nov 17 12:58 PM | | Bettinger Douglas R | Officer | Nov 14 '25 | Proposed Sale | 150.60 | 40,080 | 6,036,107 | | Nov 14 03:34 PM | | Mayer Bethany | Director | Nov 07 '25 | Sale | 159.52 | 30 | 4,786 | 3,257 | Nov 10 04:27 PM | | Mayer Bethany | Director | Nov 07 '25 | Proposed Sale | 159.52 | 30 | 4,786 | | Nov 07 09:50 AM | | Mayer Bethany | Director | Nov 03 '25 | Sale | 159.99 | 1,298 | 207,667 | 1,652 | Nov 04 06:05 PM | | Mayer Bethany | Director | Nov 03 '25 | Proposed Sale | 159.99 | 1,298 | 207,667 | | Nov 03 10:34 AM | | Harter Ava | Chief Legal Officer | Oct 27 '25 | Option Exercise | 77.04 | 6,010 | 463,004 | 62,796 | Oct 28 11:53 AM | | Harter Ava | Chief Legal Officer | Oct 27 '25 | Sale | 157.47 | 9,010 | 1,418,775 | 56,786 | Oct 28 11:53 AM | | Harter Ava | Officer | Oct 27 '25 | Proposed Sale | 157.47 | 9,010 | 1,418,775 | | Oct 27 01:10 PM | | Vahedi Vahid | Senior Vice President | Oct 13 '25 | Sale | 138.90 | 52,190 | 7,249,191 | 251,047 | Oct 14 11:40 AM | | Vahedi Vahid | Officer | Oct 13 '25 | Proposed Sale | 138.90 | 52,190 | 7,249,191 | | Oct 14 07:22 AM | | Varadarajan Seshasayee | Senior Vice President | Feb 20 '25 | Option Exercise | 18.11 | 110,080 | 1,993,296 | 253,404 | Feb 21 01:28 PM | | Varadarajan Seshasayee | Senior Vice President | Feb 20 '25 | Sale | 90.00 | 110,080 | 9,907,200 | 179,084 | Feb 21 01:28 PM | | Varadarajan Seshasayee | Officer | Feb 20 '25 | Proposed Sale | 90.00 | 110,080 | 9,907,200 | | Feb 20 10:41 AM | | Bettinger Douglas R | Chief Financial Officer & EVP | Feb 04 '25 | Option Exercise | 0.00 | 21,637 | 0 | 1,011,379 | Feb 06 04:22 PM | | Fernandes Neil J | Senior Vice President | Feb 04 '25 | Option Exercise | 0.00 | 4,805 | 0 | 57,177 | Feb 06 04:20 PM | | LORD PATRICK J | Executive Vice President | Feb 04 '25 | Option Exercise | 0.00 | 17,309 | 0 | 62,261 | Feb 06 04:18 PM | | Vahedi Vahid | Senior Vice President | Feb 04 '25 | Option Exercise | 0.00 | 14,542 | 0 | 296,344 | Feb 06 04:14 PM | | Varadarajan Seshasayee | Senior Vice President | Feb 04 '25 | Option Exercise | 0.00 | 14,542 | 0 | 179,084 | Feb 06 04:10 PM | | Correia Christina | CVP , Chief Accounting Officer | Feb 04 '25 | Option Exercise | 0.00 | 2,881 | 0 | 45,761 | Feb 06 04:08 PM | | ARCHER TIMOTHY | President and CEO | Feb 05 '25 | Option Exercise | 0.00 | 86,548 | 0 | 932,940 | Feb 06 04:06 PM |
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